Hi,VNC1L si very simple to connect. Use schematic from datasheet. At the software side it's not so simple, there is kind of communication protocol. I designed 4 way analog + rs232 logger at my previous job. Hardware was simple. I did not make software, so I can't help with software. It's two years back, but I remember that I need to flash with bin from FTDI. I think they will give away SDK only after signing NDA. Try to consider using more powerful uC, like ARM and try to find USB mass storage stack for it.

What I want to do is writing on usbFlash in embedded system that is actually a data logger and for transfering data to computer I want to use usbflash I need somethings like a compliler or library in which there are function and routine for using VNC1LPLEASE help this is ergent